Dump trailer



.1950 L. NSPEARING Em 2,495,354

DUMX TRAILER Filed Aug. 17, 1948 z Sheets-Sheet 1' YJNVENTORS an? ASiam/2, By William mrz' ATTORNEY Jan. 24, 1950 L. N. SPEARING aft-ALDUMP TRAILER 3 Sheets-Sheet 2 Filed Aug. 17, 1948 Jan. 24, 1950 L. N.SPEARING ETAL ,4

DUMP TRAILER 3 Sheets-Sheet 3 Filed Aug. 17, 1948 ATTORNEY Patented Jan.24, 1950 DUMP: TRAILERv Leonard: Swearing Detroit). andr. WilliamuHyvani, Tuscarora, .Mi'chL ApplicatiomAugust' -lq, 1948; SeriaiiNo:445.605

Claims. CLZQBr-S r This-invention relatestto:improvementsiin dump":trailers adapted? to. behauled by: any? preferred: typeaof vehicle;

It. is; an objector the; invention; trr'prnyideaa: dump trailerincluding: a.- body: supported; on. an; axle having an .ofisetiportion,and atbn-gumpivota ally connected to the body forwardlyroifthe axles; so1 that: by pulling th 1 offset portion: of: thee axle forward relative;to the tongue the bGfiY'fiSS turned;

2; tral portion: of: the axle; andi in; the; present: inzstance:extendingsheneath: the 1 axle, isathe; central: portionzof: thespring 5;

Mountechonoppcs-ite sides of therbody libetween; the; axle It and:the-front of: the saich body, and; extending beneath the flooring; ofthexlatterg. isearfulcrum rod; II).v Bivotedi0n=the-lattert cen--tnallyof the width of the. body is a: supporting: platea Ifl'; to-whichthe-reap extremity of a. tongue;

aboutits:pivotconnectionwith thelatten'andithez I2? is rigidly: secured:This: tongue: projects for.

front. extremity; of the body; is raised-.

Another. obj ect'. of: the invention; is; to: provide; such a dumptrailer whereinzmeansware provided: for rotating. a:- drum mounted on.the tongue anct. winding a: cable thereonto'; the outer-extremity of;the latter is secured to the offset. portiom. oir'thee axle so that whenthe-drumx-is turned; one. direction theoffs'et portion of theaxle isdrawnx forward and the body is rearwardl'y: and -downa wardl'y tiltedifurther object orthe invention is:to provide;t a dump trailer whereinmeans: araprovided' both: for limiting the tilting actionof the bodyandi for returning the latter to its horizontal positicm.

Another-object"ofthe-invention is to provide a dump trailerin'cluding' abody having a pivotally mounted tail board, a tongue pivoted to thebody, and projections from thetongue so connected to the tail, boardthat as;;the;-bcdy-ia moved. pivotally the tail board is swung eithertaupe-nor. closed: position.

Having thus briefly stated some of the objects and advantages of theinvention We Wiil'; now? describe-apreferred. embodimentithereofwitl'irthe aid'of the accompanying drawings; .in which :1

Figure 1 is-a plan. View. of. theimrentionand Figure 2 is asideviewthereof pantly in section.

Figure 3 is a section on the line 3'-3 of Figure 1.

Figure 4 is an enlarged. section on the Imam-4% oi'Figure-2, and

Figure 5 is aside-view, partly in section, showing the body indumping-position;

Referring to the drawings; I- designatesthe body of a dump trailer onboth sides of which downwardly projecting front and rear hangers 2 and 3are secured and pivoted on the rear hangers 3 are short links 4.Pivotally mounted on the front hangers 2 and on the links 4 are oppositeextremities of laminated springs 5. G denotes an angle having adepressed central portion I wheels 8 are mounted for rotation onopposite extremities of the said axle. The latterpreferably extendsbeneath the body I somewhat nearer the rear of the latter than thefront.

wardly: beyondthebod'y. I: and is providedatl its. front extremityrwith:any. prefer-red. means: fora attachment to; a: vehicle: (not shown) bywhich. the trailereis to be -towed.

Secnred at itszextremities to-members I 4 posi tioncd-i forwardly: ofthe frontnvertical Wall? I5 off the body and; on: opposite sides of?thelatter is a retaining rod I6. Mount-Ed onthe=tongu lz iis aconventional movable latch: l-l which normally mengages-the rodlfiiandho'ld's the-body- I parallel intermediately-of i'ts len'gth' and"projecting down wardlyiherefiom are opposed bearing plates-- 58*which:support oppositeends of a shaft" Et beneath: i the tongue.Extending through-the'latt'er:andthe Secured to each extremity of thedepressed cenwith-the saidtbngue: Whemthelatch is disengaged:- from thesaid retaining rod the body may betipped about the fulcrumrod" I ll}.

Mounted' on opposite sides' of the tongue [1% said plates I8 andsupported for rotation thereby parallel with and abovethe shaft I isanother shaft 21P- having: a gear-"2 1 thereon and a crank.

22 by rotationof which the" said" gear turned:

Fixed on the shafh l-fl is ar piniorr 23 which meshes with thegear 2-Iand secured around the said"- a shaft I 9 are a larger-drum 23*andasmaller drum 25S Formed through th tongue I 2 int'ermediateiy of itswidth and rearwardlyof the-- shaft 29 is a vertical aperture 2 6* havinga roller 2'1 mounted therein abcveanaxis parallel w-ith the axis-of ithe said shaft; 2i]? Wound'in-opposite directions around the drums 21and 2'5 are cables!!!" and 29respectively; The cable 28 at its outerextremity' is secured to the central depressed portion 7 oftheaxl'e sothat' when the shaft 20 is rotated in one direction this depressedcentral portion is pulled forwardly, thereby causing the front extremityof the body I to tilt upwardly about the fulcrum rod ID; at the sametime the other cable 29, which passes around the roller 21 and throughthe aperture 26 and is attached at its outer extremity to the retainingrod I6, is payed out, thereby permitting the front extremity of the bodyto assume its elevated position. When the shaft 20 is turned in theopposite direction the cable 28 is wound back the front extremity of thebody and is therefore useful if the load is to be gradually dischargedasthe trailer is drawn slowly along.

Carried by and beneath opposite extremitiesof the supporting plate IIand extending substantially vertically beneath the fulcrum rod in arefixed projections 36. body I toward the top thereof and adjacent itsrear extremity are hinge plates 3i which are secured to opposite sidesof a tail board 32 toward the top thereof so that as the plates 3i swingin one direction about their axes the lower extremity of the tail boardswings away from the back of the flooring 9 and permits the contents ofthe body to be dumped. Mounted for rotation through each side of thebody I and beneath the flooring ll is a pin 33 having an arm 34 fixed onits 1111181 extremity and a second arm 35 fixed on its outer extremity;it will be noted that the two arms 34 and 35 of each pair are arrangedsubstantially at right angles to one another. Pivoted on the projections30 and extending outwardly and rearwardly therefrom are reach rods 33which are While in the foregoing the preferred embodiv ment of theinvention has been described and shown it is understood that alterationsand modifications may be made thereto provided the said I alterationsand modifications fall within the scope of the appended claims.

What we claim is:

1. A dump trailer including an axle havingwheels thereon and an ofisetportion, springs supporting the body on the axle, a tongue extendingforward from beneath the body normally substantially parallel with thelatter, said body being pivoted on the tongue forwardly of the axle, adrum rotatably mounted on the tongue, meansfor turning the drum, and acable wound on the drum and connected at its outer extremity to theoffset portion of the axle, whereby upon rotation of the drum the saidoffset portion is adapted to be drawn forward relative to the tonguethereby causing rotation of the body about its pivot mountin of thetongue and thereby raising the front extremity of the latter.

Pivoted on each side of the 2. The combination in claim 1 includingmeans for gradually increasing the maximum permissible upward movementof the front of the body as the ofiset portion of the axle is pulledforward.

3. The combination in claim 1, including means for lowering the frontextremity of the body until it is substantially parallel with the tongueas the tongue is turned in the opposite direction.

4. A dump trailer including a body, a centrally offset axle havingwheels thereon extending transversely beneath the body intermediately ofthe length of the latter, means supporting the --body on the axle, atongue pivoted to the body forwardly of the axle and extending forwardbeyond said body, releasable means for holding the body parallel withthe tongue, drums mounted for rotatiton on the tongue, means for turningboth the latter, a cable wound on each drum, the outer extremity of onecable being secured to the offset portion of the axle and the outerextremity of the other cable being secured to the front of the body,whereby upon rotatiton of the drums the offset portion of the axle isadapted to be drawn forward relative to the tongue by one cable to tiltthe body about its axis on the tongue, and the other cable limits theupward swing of the front of the body.

5. A dump trailer including a body, an axle having a central offsetportion, springs supporting the body on the axle, a tongue beneath thebody and projecting forward therefrom, said body being pivoted on thetongue forwardly of the axle about a transverse horizontal axis, a drumrotatably mounted on the tongue, means for pulling the offset portion ofthe axle forward relative to the tongue when the drum is turned in onedirection and tilting the body about its axis on the tongue, projectionson the tongue, arms pivoted on the body adjacent the rear thereof, atail board pivoted on the rear of the body, links connecting the tailboard to the arms, and reach rods extending from the projections to thearms whereby when the body is tilted the tail board is swung to openposition.

LEONARD N. SPEARING.

WILLIAM HYVARI.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS France of 1933

